19/05/2008, 11:18
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| Colaborador | | Fecha de Ingreso: marzo-2008 Ubicación: Cáceres
Mensajes: 3.735
Antigüedad: 17 años Puntos: 300 | |
| Respuesta: Maximo valor de campo en varias tablas
Prueba así:
(SELECT num_order from tbl_text where id_columna = 3)
union all
(SELECT num_order from tbl_textbox where id_columna = 3)
union all
(SELECT num_order from tbl_file where id_columna = 3)
union all
(SELECT num_order from tbl_menu where id_columna = 3)
union all
(SELECT num_order from tbl_radio where id_columna = 3)
union all
(SELECT num_order from tbl_checkbox where id_columna = 3) ORDER BY num_order desc limit 1 |